Wave Optics · Interference
In a Young double slit experiment, the wavelength of incident light is 6000 Å, the separation between slits and is 5 cm, the distance between slits plane and screen is 50 cm, as shown in the figure below. If the resultant intensity at P is equal to the intensity due to individual slits, the minimum path difference between interfering waves is Å.
- (1)4000
- (2)3000
- (3)2000
- (4)1000
We corrected a printing error in the original paper
Source printed “the wavelength of incident of incident light”; “the separation between slits and 5 cm the distance”; “the path different” — corrected to the intended “the minimum path difference” (4000 Å, option (1), also gives the single-slit intensity; the key 2000 Å is the least).
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